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# Make a function named add_list that takes a list. The function should then add all of the items in the list together

Make a function named add_list that takes a list. The function should then add all of the items in the list together and return the total. Assume the list contains only numbers. You'll probably want to use a for loop. You will not need to use input().

functions.py
```# add_list([1, 2, 3]) should return 6
# summarize([1, 2, 3]) should return "The sum of [1, 2, 3] is 6."
# Note: both functions will only take *one* argument each.
```

def add_list(sum): result = 5 for i in sum: result += i return result Luckly, I know a little Python, but here is what passed...

PLUS

If must use loop, then the code is sth like this

```def add_list(li):
result = 0
for i in li:
result += i
return result
```

There's more concise way of writing this function if you aren't required to use loop

```def add_list(li):
return sum(li)
```

Even more concise: `add_list = sum`.

I don't actually care if you use a list here or not, but it's good practice to do it the long way.

How do you know this? It was never mentioned in the Videos... or am I doing something wrong?